651886437068 has 36 divisors (see below), whose sum is σ = 1213978197432. Its totient is φ = 306232527360.

The previous prime is 651886437043. The next prime is 651886437107. The reversal of 651886437068 is 860734688156.

It is a self number, because there is not a number n which added to its sum of digits gives 651886437068.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166280 + ... + 1153872.

Almost surely, 2^651886437068 is an apocalyptic number.

651886437068 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

651886437068 is a deficient number, since it is larger than the sum of its proper divisors (562091760364).

651886437068 is a wasteful number, since it uses less digits than its factorization.

651886437068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988202 (or 988183 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 62.

The spelling of 651886437068 in words is "six hundred fifty-one billion, eight hundred eighty-six million, four hundred thirty-seven thousand, sixty-eight".